350 Downeast encourages small steps for big change

by Sarah Craighead Dedmon

There are high levels of carbon dioxide (CO2) in earth’s atmosphere. According to the National Oceanic and Atmospheric Administration (NOAA), carbon dioxide levels fluctuated between 180 and 280 parts per million (ppm) for the 800,000 years leading up to the industrial revolution, when mankind began burning fossil fuels. Today, they’re over 400 ppm. 

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